[Bloat] [Cerowrt-devel] DC behaviors today

Mikael Abrahamsson swmike at swm.pp.se
Mon Dec 4 04:13:18 EST 2017

On Sun, 3 Dec 2017, Dave Taht wrote:

> What Jesper's been working on for ages has been to try and get linux's 
> PPS up for small packets, which last I heard was hovering at about 
> 4Gbits.

You might want to look into what the VPP (https://fd.io/) peeps are doing. 
They can at least forward packets at pretty impressive rates. 200Mpps zero 
frame loss with 2M FIB, limited to NIC and PCIe, not CPU (on many-core 

> I have never thought there was much of a market for gbit to or from the 
> home. 40Mbits is enough for nearly everybody until > 4k video with 
> smellovision and tactile feedback become a standard.

I'd say the sweet spot right now is in the 100-250 megabit/s range, 
considering "cost of production" and "what do people need/use". This means 
it still can be done on 1 gigabit/s access links.

Anything faster than 1GE is going to be significantly more expensive than 
1GE because 1GE is "good enough for most" when it comes to hundreds of 
millions of households for their inter/intra home need. Also for SME use, 
1GE is good enough for a lot of use cases.

I personally now have 250/50 which is good enough for me, and I don't want 
to pay 2x my current MRC to get 1000/100. However, if I had to downgrade 
to 30 megabit/s I would most certinaly notice it, and in my market that 
would just be a 20-30% saving which definitely isn't worth it.

Mikael Abrahamsson    email: swmike at swm.pp.se

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